221101212011012 has 12 divisors (see below), whose sum is σ = 386937516119616. Its totient is φ = 110547635976840.

The previous prime is 221101212010969. The next prime is 221101212011041. The reversal of 221101212011012 is 210110212101122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 742339664 + ... + 742637447.

It is an arithmetic number, because the mean of its divisors is an integer number (32244793009968).

Almost surely, 2^{221101212011012} is an apocalyptic number.

It is an amenable number.

221101212011012 is a deficient number, since it is larger than the sum of its proper divisors (165836304108604).

221101212011012 is a wasteful number, since it uses less digits than its factorization.

221101212011012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1485014338 (or 1485014336 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 221101212011012 its reverse (210110212101122), we get a palindrome (431211424112134).

The spelling of 221101212011012 in words is "two hundred twenty-one trillion, one hundred one billion, two hundred twelve million, eleven thousand, twelve".